FCC ID: 2AC7Z-ESPWROOMDA Wi-Fi & Bluetooth Internet of Things Module

ESP32WROOMDA User Manual StandAlone Module with Dual Antennas Containing UltraLowPower SoC with DualCore CPU Supporting 2.4 GHz WiFi, Bluetooth, and Bluetooth LE ESP32WROOMDA www.espressif.com Pre-release v0.5 Espressif Systems Copyright 2021 About This Document This user manual shows how to get started with the ESP32-WROOM-DA module. Document Updates Please always refer to the latest version on https://www.espressif.com/en/support/download/documents. Revision History For revision history of this document, please refer to the last page. Documentation Change Notification Espressif provides email notifications to keep you updated on changes to technical documentation. Please sub-

scribe at www.espressif.com/en/subscribe. Certification Download certificates for Espressif products from www.espressif.com/en/certificates. 2 Get Started on ESP32WROOMDA 2.1 What You Need Contents Contents 1 Overview 1.1 Module Overview 1.2 Pin Description 2.2 2.3 Hardware Connection Set up Development Environment 2.3.1 Install Prerequisites 2.3.2 Get ESP-IDF Set up Tools 2.3.3 2.3.4 Set up Environment Variables 2.4 Create Your First Project 2.4.1 Start a Project 2.4.2 Connect Your Device 2.4.3 Configure 2.4.4 Build the Project 2.4.5 Flash onto the Device 2.4.6 Monitor 3 U.S. FCC Statement 4 Related Documentation and Resources Revision History 4 4 5 8 8 8 9 9 9 10 10 10 10 10 10 11 12 13 14 16 17 Espressif Systems 3 ESP32-WROOM-DA User Manual v0.5 1 Overview 1 Overview 1.1 Module Overview Wi-Fi Protocols Frequency range Protocols Bluetooth Radio Audio Module interfaces Hardware ESP32-WROOM-DA is a powerful Wi-Fi + Bluetooth + Bluetooth LE MCU module, with two complementary PCB antennas in different directions. This module is embedded with ESP32-D0WD-V3 with a rich set of integrated components including SPI flash and 40 MHz crystal oscillator. With two unique antennas design on one single module, ESP32-WROOM-DA can be used to develop IoT applications that need stable connectivity over a broad spectrum, or to deploy Wi-Fi in challenging and hazardous environments, or to overcome communication problems in Wi-Fi-dead spots. This module is an ideal choice for indoor and outdoor devices for smart home, industrial control, consumer electronics, etc. Table 1: ESP32WROOMDA Specifications Categories Items Specifications 802.11 b/g/n (802.11n up to 150 Mbps) A-MPDU and A-MSDU aggregation and 0.4 s guard interval support 2412 ~ 2484 MHz Protocols v4.2 BR/EDR and Bluetooth LE specifica-

tions Class-1, class-2 and class-3 transmitter AFH CVSD and SBC SD card, UART, SPI, SDIO, I2C, LED PWM, Mo-

tor PWM, I2S, IR, pulse counter, GPIO, capacitive touch sensor, ADC, DAC, TWAI ( compatible with ISO 11898-1, i.e. CAN Specification 2.0) Integrated crystal Integrated SPI flash 40 MHz crystal 8 MB Operating voltage/Power supply 3.0 V ~ 3.6 V Operating current Average: 80 mA Minimum current delivered by power supply ture range Recommended operating tempera-

500 mA 40 ~ 85 C Moisture sensitivity level (MSL) Level 3 Espressif Systems 4 ESP32-WROOM-DA User Manual v0.5 1 Overview 1.2 Pin Description The pin diagram below shows the approximate location of pins and the two antennas on the module. Figure 1: Pin Layout (Top View) The module has 41 pins and two test points. See pin definitions in Table 2. Table 2: Pin Definitions No. Type Function2 Ground Power supply Name GND 3V3 EN SENSOR_VP SENSOR_VN IO34 IO35 1 2 3 4 5 6 7 P P I I I I I High: On; enables the chip Low: Off; the chip powers off Note: Do not leave the pin floating. GPIO36, ADC1_CH0, RTC_GPIO0 GPIO39, ADC1_CH3, RTC_GPIO3 GPIO34, ADC1_CH6, RTC_GPIO4 GPIO35, ADC1_CH7, RTC_GPIO5 Espressif Systems 5 ESP32-WROOM-DA User Manual v0.5 Contd on next page 1234567891011121314GND3V3SENSOR_VPSENSOR_VNIO34IO35IO32IO33NCIO26IO27IO14IO12EN4039383736353433323130292827151617181920212223242526NCGNDIO13NCNCNCNCNCNCIO15NCNCGNDIO23IO22U0TXDU0RXDIO21NCIO19IO18IO5IO17IO16IO4IO0GNDGNDGNDGND43GNDGNDGNDGNDGND4241IO2IO25Top ViewAntenna 1Antenna 2 Table 2 contd from previous page No. Type Function2 GPIO32, XTAL_32K_P (32.768 kHz crystal oscillator input), ADC1_CH4, TOUCH9, RTC_GPIO9 GPIO33, XTAL_32K_N (32.768 kHz crystal oscillator output), ADC1_CH5, TOUCH8, RTC_GPIO8 10 GPIO26, DAC_2, ADC2_CH9, RTC_GPIO7, EMAC_RXD1 GPIO27, ADC2_CH7, TOUCH7, RTC_GPIO17, EMAC_RX_DV GPIO14, ADC2_CH6, TOUCH6, RTC_GPIO16, MTMS, HSPICLK, HS2_CLK, SD_CLK, EMAC_TXD2 GPIO12, ADC2_CH5, TOUCH5, RTC_GPIO15, MTDI, HSPIQ, HS2_DATA2, SD_DATA2, EMAC_TXD3 15 16 P Ground GPIO13, ADC2_CH4, TOUCH4, RTC_GPIO14, MTCK, HSPID, HS2_DATA3, SD_DATA3, EMAC_RX_ER 1 Overview Name IO32 IO33 NC IO26 IO27 IO14 IO12 NC GND IO13 NC NC NC NC NC NC NC NC IO0 IO4 IO16 IO17 IO5 IO18 IO19 NC IO21 U0RXD U0TXD IO22 IO23 GND NC 3 8 9 I/O I/O 11 12 I/O I/O 13 I/O 14 I/O 17 I/O 18 19 20 21 22 23 25 26 27 I/O 28 I/O 29 30 31 32 33 35 36 37 38 39 40 I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O P IO15 24 I/O HS2_CMD, SD_CMD, EMAC_RXD3 GPIO15, ADC2_CH3, TOUCH3, MTDO, HSPICS0, RTC_GPIO13, GPIO0, ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1, EMAC_TX_CLK GPIO4, ADC2_CH0, TOUCH0, RTC_GPIO10, HSPIHD, HS2_DATA1, SD_DATA1, EMAC_TX_ER GPIO16, HS1_DATA4, U2RXD, EMAC_CLK_OUT GPIO17, HS1_DATA5, U2TXD, EMAC_CLK_OUT_180 GPIO5, VSPICS0, HS1_DATA6, EMAC_RX_CLK GPIO18, VSPICLK, HS1_DATA7 GPIO19, VSPIQ, U0CTS, EMAC_TXD0 34 GPIO21, VSPIHD, EMAC_TX_EN GPIO3, U0RXD, CLK_OUT2 GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2 GPIO22, VSPIWP, U0RTS, EMAC_TXD1 GPIO23, VSPID, HS1_STROBE Ground 41 Espressif Systems 6 ESP32-WROOM-DA User Manual v0.5 Contd on next page 1 Overview Table 2 contd from previous page Name NC 3 GND No. Type Function2 42 43 P Ground 1 For peripheral pin configurations, please refer to ESP32 Series Datasheet. 2 GPIO2 and GPIO25 on the ESP32-D0WD-V3 chip are designed as test points to control RF Switch. The two pins are not led out to the module. To select the working antenna, (Antenna 1 or Antenna 2), configure GPIO2 and GPIO25 as follows:

Table 3: Select Working Antenna Working Antenna GPIO2 GPIO25 Antenna 1 Antenna 2 (by default) High Low Low High Espressif Systems 7 ESP32-WROOM-DA User Manual v0.5 2 Get Started on ESP32-WROOM-DA 2 Get Started on ESP32WROOMDA 2.1 What You Need To develop applications for module you need:

1 x ESP32-WROOM-DA module 1 x Espressif RF testing board 1 x USB-to-Serial board 1 x Micro-USB cable 1 x PC running Linux In this user guide, we take Linux operating system as an example. For more information about the configuration on Windows and macOS, please refer to ESP-IDF Programming Guide. 2.2 Hardware Connection 1. Solder the ESP32-WROOM-DA module to the RF testing board as shown in Figure 2. Figure 2: Hardware Connection 2. Connect the RF testing board to the USB-to-Serial board via TXD, RXD, and GND. 3. Connect the USB-to-Serial board to the PC. 4. Connect the RF testing board to the PC or a power adapter to enable 5 V power supply, via the Micro-USB cable. 5. During download, connect IO0 to GND via a jumper. Then, turn ON the testing board. 6. Download firmware into flash. For details, see the sections below. Espressif Systems 8 ESP32-WROOM-DA User Manual v0.5 2 Get Started on ESP32-WROOM-DA 7. After download, remove the jumper on IO0 and GND. 8. Power up the RF testing board again. ESP32-WROOM-DA will switch to working mode. The chip will read programs from flash upon initialization. IO0 is internally logic high. If IO0 is set to pull-up, the Boot mode is selected. If this pin is pull-down or left floating, the Download mode is selected. For more information on ESP32-WROOM-DA, please refer to ESP32-WROOM-DA Note:

Datasheet. 2.3 Set up Development Environment The Espressif IoT Development Framework (ESP-IDF for short) is a framework for developing applications based on the Espressif ESP32. Users can develop applications with ESP32 in Windows/Linux/macOS based on ESP-IDF. Here we take Linux operating system as an example. 2.3.1 Install Prerequisites To compile with ESP-IDF you need to get the following packages:

CentOS 7:

sudo yum install git wget flex bison gperf python cmake ninja-build ccache dfu-util Ubuntu and Debian (one command breaks into two lines):

sudo apt-get install git wget flex bison gperf python python-pip python-setuptools cmake ninja-build ccache libffi-dev libssl-dev dfu-util sudo pacman -S --needed gcc git make flex bison gperf python-pip cmake ninja ccache dfu-util This guide uses the directory ~/esp on Linux as an installation folder for ESP-IDF. Keep in mind that ESP-IDF does not support spaces in paths. To build applications for ESP32-WROOM-DA module, you need the software libraries provided by Espressif in To get ESP-IDF, create an installation directory (~/esp) to download ESP-IDF to and clone the repository with git git clone --recursive https://github.com/espressif/esp-idf.git ESP-IDF will be downloaded into ~/esp/esp-idf. Consult ESP-IDF Versions for information about which ESP-IDF version to use in a given situation. Espressif Systems 9 ESP32-WROOM-DA User Manual v0.5 Arch:

Note:

2.3.2 Get ESPIDF ESP-IDF repository. clone:

mkdir -p ~/esp cd ~/esp 2 Get Started on ESP32-WROOM-DA 2.3.3 Set up Tools cd ~/esp/esp-idf

./install.sh Aside from the ESP-IDF, you also need to install the tools used by ESP-IDF, such as the compiler, debugger, Python packages, etc. ESP-IDF provides a script named install.sh to help set up the tools in one go. 2.3.4 Set up Environment Variables The installed tools are not yet added to the PATH environment variable. To make the tools usable from the command line, some environment variables must be set. ESP-IDF provides another script export.sh which does that. In the terminal where you are going to use ESP-IDF, run:

. $HOME/esp/esp-idf/export.sh Now everything is ready, you can build your first project on ESP32-WROOM-DA module. Now you are ready to prepare your application for ESP32-WROOM-DA module. You can start with get-started/hello_world 2.4 Create Your First Project 2.4.1 Start a Project project from examples directory in ESP-IDF. Copy get-started/hello_world to ~/esp directory:

cd ~/esp cp -r $IDF_PATH/examples/get-started/hello_world . There is a range of example projects in the examples directory in ESP-IDF. You can copy any project in the same way as presented above and run it. It is also possible to build examples in-place, without copying them first. 2.4.2 Connect Your Device Now connect your ESP32-WROOM-DA module to the computer and check under what serial port the module is visible. Serial ports in Linux start with /dev/tty in their names. Run the command below two times, first with the board unplugged, then with plugged in. The port which appears the second time is the one you need:

ls /dev/tty*

Note:

Keep the port name handy as you will need it in the next steps. 2.4.3 Configure project configuration utility menuconfig. cd ~/esp/hello_world idf.py set-target esp32 idf.py menuconfig Navigate to your hello_world directory from Step 2.4.1. Start a Project, set ESP32 chip as the target and run the Espressif Systems 10 ESP32-WROOM-DA User Manual v0.5 2 Get Started on ESP32-WROOM-DA Setting the target with idf.py set-target esp32 should be done once, after opening a new project. If the project contains some existing builds and configuration, they will be cleared and initialized. The target may be saved in environment variable to skip this step at all. See Selecting the Target for additional information. If the previous steps have been done correctly, the following menu appears:

Figure 3: Project Configuration Home Window The colors of the menu could be different in your terminal. You can change the appearance with the option --style. Please run idf.py menuconfig --helpfor further information. This command will compile the application and all ESP-IDF components, then it will generate the bootloader, 2.4.4 Build the Project Build the project by running:

idf.py build partition table, and application binaries.

$ idf.py build Running cmake in directory /path/to/hello_world/build Executing cmake -G Ninja --warn-uninitialized /path/to/hello_world... Warn about uninitialized values.

-- Found Git: /usr/bin/git (found version 2.17.0)

-- Building empty aws_iot component due to configuration

-- Component names: ...

-- Component paths: ... .. (more lines of build system output)

[527/527] Generating hello-world.bin esptool.py v2.3.1 Project build complete. To flash, run this command:

Espressif Systems 11 ESP32-WROOM-DA User Manual v0.5 2 Get Started on ESP32-WROOM-DA

../../../components/esptool_py/esptool/esptool.py -p (PORT) -b 921600 write_flash --flash_mode dio

--flash_size detect --flash_freq 40m 0x10000 build/hello-world.bin build 0x1000 build/bootloader/bootloader.bin 0x8000 build/partition_table/partition-table.bin or run idf.py -p PORT flash If there are no errors, the build will finish by generating the firmware binary .bin file. 2.4.5 Flash onto the Device idf.py -p PORT [-b BAUD] flash Flash the binaries that you just built onto your ESP32-WROOM-DA module by running:

Replace PORT with your modules serial port name from Step: Connect Your Device. You can also change the flasher baud rate by replacing BAUD with the baud rate you need. The default baud rate For more information on idf.py arguments, see idf.py. If everything goes well, the hello_world application starts running after you remove the jumper on IO0 and GND, and re-power up the testing board. is 460800. Note:

The option flash automatically builds and flashes the project, so running idf.py build is not necessary. Running esptool.py in directory [...]/esp/hello_world Executing python [...]/esp-idf/components/esptool_py/esptool/esptool.py -b 460800 write_flash

@flash_project_args... esptool.py -b 460800 write_flash --flash_mode dio --flash_size detect --flash_freq 40m 0x1000 bootloader/bootloader.bin 0x8000 partition_table/partition-table.bin 0x10000 hello-world.bin esptool.py v2.3.1 Connecting.... Detecting chip type... ESP32 Chip is ESP32 Features: WiFi, BT, Dual Core Uploading stub... Running stub... Stub running... Changing baud rate to 460800 Changed. Configuring flash size... Auto-detected Flash size: 8MB Flash params set to 0x0220 Compressed 22992 bytes to 13019... Hash of data verified. Compressed 3072 bytes to 82... Hash of data verified. Compressed 136672 bytes to 67544... Hash of data verified. Wrote 22992 bytes (13019 compressed) at 0x00001000 in 0.3 seconds (effective 558.9 kbit/s)... Wrote 3072 bytes (82 compressed) at 0x00008000 in 0.0 seconds (effective 5789.3 kbit/s)... Wrote 136672 bytes (67544 compressed) at 0x00010000 in 1.9 seconds (effective 567.5 kbit/s)... Espressif Systems 12 ESP32-WROOM-DA User Manual v0.5 2 Get Started on ESP32-WROOM-DA Leaving... Hard resetting via RTS pin... 2.4.6 Monitor serial port name). To check if hello_world is indeed running, type idf.py -p PORT monitor Do not forget to replace PORT with your This command launches the IDF Monitor application:

$ idf.py -p /dev/ttyUSB0 monitor Running idf_monitor in directory [...]/esp/hello_world/build Executing python [...]/esp-idf/tools/idf_monitor.py -b 115200

[...]/esp/hello_world/build/hello-world.elf...

--- idf_monitor on /dev/ttyUSB0 115200 ---

--- Quit: Ctrl+] | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H ---

ets Jun 8 2016 00:22:57 rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) ets Jun 8 2016 00:22:57 After startup and diagnostic logs scroll up, you should see Hello world! printed out by the application. This is esp32 chip with 2 CPU cores, WiFi/BT/BLE, silicon revision 3, 8MB flash

... .. Hello world!

Restarting in 10 seconds... Restarting in 9 seconds... Restarting in 8 seconds... Restarting in 7 seconds... To exit IDF monitor use the shortcut Ctrl+]. Thats all what you need to get started with ESP32-WROOM-DA module! Now you are ready to try some other examples in ESP-IDF, or go right to developing your own applications. Espressif Systems 13 ESP32-WROOM-DA User Manual v0.5 3 U.S. FCC Statement 3 U.S. FCC Statement FCC ID: 2AC7ZESPWROOMDA This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

This device may not cause harmful interference. This device must accept any interference received, including interference that may cause undesired opera-

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part15 tion. of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Caution:

authority to operate the equipment. Any changes or modifications not expressly approved by the party responsible for compliance could void the users This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This device and its antenna must not be co-located or operating in conjunction with any other antenna or transmitter. The antennas used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. For European markets the relevant directives are mentioned below:

It is the responsibility of the manufacturer of the final product to verify whether or not further standards, recom-

mendations or directives are in force outside these areas. Please note that SAR requirements are specific only for portable devices and not for mobile devices as defined below:

Portable device: A portable device is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user. Mobile device: A mobile device is defined as a transmitting device designed to be used in other than fixed locations and to generally be used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitters radiating structure(s) and the body of the user or nearby Espressif Systems 14 ESP32-WROOM-DA User Manual v0.5 3 U.S. FCC Statement persons. In this context, the term fixed location means that the device is physically secured at one location and is not able to be easily moved to another location. OEM Integration Instructions This device is intended only for OEM integrators under the following conditions The module can be used to installation in another host. The antenna must be installed such that 20 cm is maintained between the antenna and users, and the transmitter module may not be co-located with any other transmit or antenna. The module shall be only used with the integral antenna(s) that has been originally tested and certified with this module. As long as 3 conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirement with this module installed

(for example, digital device emission, PC peripheral requirements, etc.) Notice:

In the event that these conditions cannot be met (for example certain laptop configuration or co-location with another transmitter), then the FCC authorization for this module in combination with the host equipment is no longer considered valid and the FCC ID of the module cannot be used on the final product. In these and circumstance, the OEM integrator will be responsible for re-evaluating. The end product (including the transmitter) and obtaining a separate FCC authorization. The final end product must be labeled in a visible area with the following: Contains Transmitter Module FCC ID:

2AC7ZESPWROOMDA or Contains FCC ID: 2AC7ZESPWROOMDA. Espressif Systems 15 ESP32-WROOM-DA User Manual v0.5 4 Related Documentation and Resources 4 Related Documentation and Resources Related Documentation ESP32 Technical Reference Manual Detailed information on how to use the ESP32 memory and peripherals. ESP32 Series Datasheet Specifications of the ESP32 hardware. ESP32 Hardware Design Guidelines Guidelines on how to integrate the ESP32 into your hardware product. ESP32 ECO and Workarounds for Bugs Correction of ESP32 design errors. Certificates http://espressif.com/en/support/documents/certificates ESP32 Product/Process Change Notifications (PCN) http://espressif.com/en/support/documents/pcns ESP32 Advisories Information on security, bugs, compatibility, component reliability. http://espressif.com/en/support/documents/advisories Documentation Updates and Update Notification Subscription http://espressif.com/en/support/download/documents Developer Zone ESP-IDF Programming Guide for ESP32 Extensive documentation for the ESP-IDF development framework. ESP-IDF and other development frameworks on GitHub. http://github.com/espressif ESP32 BBS Forum Engineer-to-Engineer (E2E) Community for Espressif products where you can post questions, share knowledge, explore ideas, and help solve problems with fellow engineers. http://esp32.com/

The ESP Journal Best Practices, Articles, and Notes from Espressif folks. http://medium.com/the-esp-journal See the tabs SDKs and Demos, Apps, Tools, AT Firmware. http://espressif.com/en/support/download/sdks-demos Products ESP32 Series SoCs Browse through all ESP32 SoCs. http://espressif.com/en/products/socs?id=ESP32 ESP32 Series Modules Browse through all ESP32-based modules. http://espressif.com/en/products/modules?id=ESP32 ESP32 Series DevKits Browse through all ESP32-based devkits. http://espressif.com/en/products/devkits?id=ESP32 ESP Product Selector Find an Espressif hardware product suitable for your needs by comparing or applying filters. http://products.espressif.com/#/product-selector?language=en Contact Us See the tabs Sales Questions, Technical Enquiries, Circuit Schematic & PCB Design Review, Get Samples

(Online stores), Become Our Supplier, Comments & Suggestions. http://espressif.com/en/contact-us/sales-questions Espressif Systems 16 ESP32-WROOM-DA User Manual v0.5 Revision History Revision History Date Version Release notes 2021-12-10 v0.5 For certification only Espressif Systems 17 ESP32-WROOM-DA User Manual v0.5 Disclaimer and Copyright Notice Information in this document, including URL references, is subject to change without notice. ALL THIRD PARTYS INFORMATION IN THIS DOCUMENT IS PROVIDED AS IS WITH NO WARRANTIES TO ITS AUTHENTICITY AND ACCURACY. NO WARRANTY IS PROVIDED TO THIS DOCUMENT FOR ITS MERCHANTABILITY, NON-

INFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, NOR DOES ANY WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. All liability, including liability for infringement of any proprietary rights, relating to use of information in this document is disclaimed. No licenses express or implied, by estoppel or otherwise, to any intellectual property rights are granted herein. The Wi-Fi Alliance Member logo is a trademark of the Wi-Fi Alliance. The Bluetooth logo is a registered trademark of Bluetooth SIG. www.espressif.com All trade names, trademarks and registered trademarks mentioned in this document are property of their respective owners, and are hereby acknowledged. Copyright 2021 Espressif Systems (Shanghai) Co., Ltd. All rights reserved.

4) ESPRESSIF ESP32-WROOM-DA CE FCC ID: 2AC7Z-ESPWROOMDA CMIIT ID :

Sa RHR (Li) BAIR GS) XXKXXXKX Oa. Yas as ESP32-WROOM-DA CMIIT ID:

Serer rT TT

@) ESPRESSIF FRB (a SER (LIS) RO ARAAl 47= | PW Number 7= GS | Product Name 7= 41S | Product Number 4um | Quantity

+hk2s | Firmware Ver IRB | Country of Origin 47* AHA | Seal Date HRS | Lot Number Hate | OAC PW-2020-11-0001 ESP32-WROOM-32D M21EH3264PH3Q0 650 pcs IDF:

AT:

FW P/N:

MADE IN CHINA 2020-11-30 202048-000001 202048-000002 202048-000003 202048-000004 202048-000005 7 G53 | QR code fl

Item Quantity Reference Value BOM_ESP32-WROOM-DA-N4 ICs Package Notes C1, C45,C46 22 pF / 50 V (5%), -55 ~ +125 C C2 27 pF / 50 V (5%), -55 ~ +125 C C3,C42,C43,C44 100 pF / 50 V (5%), -55 ~ +125 C C4, C9, C10, C19 0.1 uF / 6.3 V (10%), -55 ~ +85 C 10 nF / 6.3 V (10%), -55 ~ +125 C 10 nF / 10 V (10%), -55 ~ +125 C 3.3 nF / 6.3 V (10%), -55 ~ +125 C C11, C18, C20 1 uF / 6.3 V (20%), -55 ~ +85 C 10 uF / 6.3 V (20%), -55 ~ +85 C 10 uF / 10 V (20%), -55 ~ +85 C 2.7 pF / 50 V (0.1 pF), -55 ~ +125 C 1.5 pF / 50 V (0.1 pF), -55 ~ +125 C 2.2 nH (0.1 nH), -55 ~ +125 C TBD TBD 3.0 nH (0.1 nH), -55 ~ +125 C TBD TBD 3.0 nH (0.1 nH), -55 ~ +125 C 2.0 nH (0.1 nH), 600 mA, -55 ~ +125 C 100 (5%), 1/20 W, -55 ~ +125 C 499 (1%), 1/20 W, -55 ~ +125 C 499 (1%), 1/20 W, -55 ~ +155 C 20 K (5%), 1/20 W, -55 ~ +125 C 20 K (5%), 1/20 W, -55 ~ +155 C 10 K (5%), 1/20 W, -55 ~ +125 C 10 K (5%), 1/20 W, -55 ~ +155 C 0 (5%), 1/20 W, -55 ~ +125 C TVS Diode, Bi-Direction, 3.3V, -55 ~ +150 C 40 MHz, 10 ppm, 15 pF, 100 uW, -40 ~ +85 C 40 MHz, 10 ppm, 15 pF, 100 uW, -40 ~ +105 C ESP32-D0WD-V3, Wi-Fi + BT + MCU, -40 ~ +125 C 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 3 1 4 4 1 1 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 C5 C6 C13 C14 C15 L4 C37 C38 L3 C39 C40 L6 L5 R2 R3 R1 U1 U2 U3 PCB R12,R13 R14,R15 D1 C0201 C0201 C0201 C0201 C0201 C0201 C0201 C0201 C0402 C0402 C0201 C0201 L0201 C0201 C0201 L0201 C0201 C0201 L0201 L0201 R0201 R0201 R0201 R0201 R0201 SOD882 SOT-363

2.7 ~ 3.6 V, 32 Mbit, Standard&Dual&Quad SPI, -40 ~ +85 C SOP8-208mil&150mil U9 shield cover RTC6603SP ESP32-WROOM-DA_V1.0 shield cover ESP32-WROOM-DA_V1.1, 4L, 34.4 mm * 35.6 mm * 1.0 mm, HF,50 ingle end impedance control

CRYS/SMD/4P/3.2X2.5 Crystal QFN48EB_0P35_5 Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Inductor Capacitor Capacitor Inductor Capacitor Capacitor Inductor Inductor Resistor Resistor Resistor Resistor Resistor ESD / TVS Chip Chip Chip

Description Ceramic Capacitors Ceramic Capacitors Ceramic Capacitors Ceramic Capacitors Ceramic Capacitors Ceramic Capacitors Ceramic Capacitors Ceramic Capacitors Ceramic Capacitors Ceramic Capacitors Ceramic Capacitors Ceramic Capacitors Inductor Ceramic Capacitors Ceramic Capacitors Inductor Ceramic Capacitors Ceramic Capacitors Inductor Inductor Chip Resistors Chip Resistors Chip Resistors Chip Resistors Chip Resistors TVS Diode, 3.3 V 40MHz Crystal Wi-Fi + BT + MCU 3.3 V SPI FLASH SPDT Switch

RF RF RF RF RF RF RF RF RF First Source Second Source First Source Second Source

Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs 0.457 and 0.459 of the Commissions Rules (47 C.F.R.) and Section the 552(b)(4) of documentation of the following products:

Information Act, we request confidentiality for the Freedom of FCC ID 2AC7Z-ESPWROOMDA Model name ESP32-WROOM-DA For the products listed above, we request permanent confidentiality for all applicable exhibits as there are:

the Operational Description the Block Diagram the Schematics The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, Signature Date 2021.11.02 Printed Name of Signee: Mia Zhou Company: ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD Address: Suite 101, Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, China Phone:(8621)61065209 Email: zhoumiaomiao@espressif.com Fax:

ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD FCC ID:2AC7Z-ESPWROOMDA is seeking FCC Authorization as a Modular Approval Letter Single Modular Transmitter Single Limited Modular Transmitter The EUT meets the requirements for:

Single Modular Approval Single Limited Modular Approval as detailed in KDB 996369. Compliance to each of the requirements is described below:

Modular Approval Requirement Yes No Explanation

(i) The radio elements of the modular transmitter must have The module has its own RF shielding. their own shielding. The physical crystal and tuning capacitors Please see external photo.pdf may be located external to the shielded radio elements.

(ii) The modular transmitter must have buffered The modular has buffered data modulation/data inputs (if such inputs are provided) to ensure inputs, it is integrated in that the module will comply with part chip ESP32. Please see 15 requirements under conditions of excessive data rates or schematic.pdf

(iii) The modular transmitter must have its own power supply All power lines derived from over-modulation. regulation. the host device are regulated before energizing other circuits internal to the ESP32. Please see schematic.pdf

(iv) The modular transmitter must comply with the antenna and The ESP32-WROOM-DA meets transmission system requirements of 15.203, 15.204(b) and the FCC antenna requirements. 15.204(c). The antenna must either be permanently attached ESP32-WROOM-DA is an On-board or employ a unique antenna coupler (at all connections antenna. between the module and the antenna, including the cable). The professional installation provision of 15.203 is not applicable to modules but can apply to limited modular approvals under paragraph (b) of this section.

(v) The modular transmitter must be tested in a stand-alone The ESP32-WROOM-DA was tested configuration

(vi) The modular transmitter must be equipped with either a The label position of permanently affixed label or must be capable of electronically ESP32-WROOM-DA is clearly displaying its FCC identification number. in a stand-alone configuration via com serial interface. Please see test set-up photo.pdf indicated. If the FCC ID of the module cannot be seen when it is installed, then the host label must include the text: Contains FCC ID:

2AC7Z-ESPWROOMDA. Please see the label.pdf

(vii) The modular transmitter must comply with any specific The ESP32-WROOM-DA is compliant rules or operating requirements that ordinarily apply to a with all applicable FCC rules. Detail complete transmitter and the manufacturer must provide instructions are given in the Users adequate instructions along with the module to explain any Manual. Please see user manual.pdf such requirements. A copy of these instructions must be included in the application for equipment authorization.

(viii) The modular transmitter must comply with any applicable The ESP32-WROOM-DA is approved RF exposure requirements in its final configuration. to comply with the applicable RF exposure requirement, please see the MPE evaluation with 20cm as the distance restriction. Clients signature:

Clients name & title:Mia Zhou Contact information / address:

Suite 101, Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, China